diff --git a/gnome-system-monitor.spec b/gnome-system-monitor.spec
index dae827c..ff03fe4 100644
--- a/gnome-system-monitor.spec
+++ b/gnome-system-monitor.spec
@@ -33,7 +33,8 @@ BuildRequires: pcre-devel
 BuildRequires: librsvg2-devel
 BuildRequires: gnome-doc-utils >= 0.3.2
 BuildRequires: gnome-common
-BuildRequires: polkit-devel >= %{polkit_version}
+BuildRequires: libwnck3-devel
+BuildRequires: libxml2-devel
 
 # needed for autoreconf
 BuildRequires: autoconf, automake, libtool